\n\t\t\tThe Shimano FC-9100 Chainring 55T-MX for 55-42T is a tooth replacement or upgrade chainring that is compatible with the 11 speed Dura-Ace 9100 series double chainset. This four-arm Shimano FC-9100 Chainring 55T-MX for 55-42T is machined from aluminium and carbon, giving both greater rigidity and lighter weight than its predecessors, and with that rigidity comes improved shifting for accurate gear changes every time.
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